DIFFERENTIAL AMPLIFICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a differential amplification device capable of obtaining a good CMRR even in high frequency regions.SOLUTION: A differential amplification device that is configured so as to amplify a difference between two signals includes: a first amplifier that amplifies the difference between the two signals; a second amplifier that amplifies the difference between the two signals; and a third amplifier that amplifies a difference between an output signal of the first amplifier and an output signal of the second amplifier.SELECTED DRAWING: Figure 1